99642226 has 32 divisors (see below), whose sum is σ = 157282560. Its totient is φ = 47309184.

The previous prime is 99642211. The next prime is 99642227. The reversal of 99642226 is 62224699.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (99642227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611221 + ... + 611383.

It is an arithmetic number, because the mean of its divisors is an integer number (4915080).

Almost surely, 2^99642226 is an apocalyptic number.

99642226 is a deficient number, since it is larger than the sum of its proper divisors (57640334).

99642226 is a wasteful number, since it uses less digits than its factorization.

99642226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370.

The product of its digits is 93312, while the sum is 40.

The square root of 99642226 is about 9982.0952710340. The cubic root of 99642226 is about 463.6046752963.

The spelling of 99642226 in words is "ninety-nine million, six hundred forty-two thousand, two hundred twenty-six".